The novel nickelate superconductors of infinite-layer type feature challenging electronic pecularities in the normal-state phase diagram with doping. Distinct many-body behavior and different dispersion regimes of the entangled $\{\mathrm{Ni}\text{−}{d}_{z^2}$, Ni-$d_{x^2-y^2}\}$ orbital sector give rise to highly rich physics, which is here studied for the case of the $\mathrm{Nd}\mathrm{Ni}{\mathrm{O}}_2$ system. An analysis based on advanced realistic dynamical mean-field theory unveils that the superconducting hole-doped region is the meeting place of a (self-)doped Mott insulator from the underdoped side, and a bad Hund metal from the overdoped side. Fermi-level crossing of the Ni-$d_{z^2}$ flat-band ties both regimes together to form a singular arena for unconventional superconductivity. We furthermore shed light on the intriguing problem of elusive magnetism in infinite-layer nickelates. Antiferromagnetic (AFM) order with small Ni moments is shown to be a vital competitor at low temperature. At stoichiometry, C-AFM order with ferromagnetic spin-alignment along the $c$-axis benefits from a conceivable coexistence with Kondo(-lattice) screening.

中文翻译：

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NdNiO2的掺杂相关特性和可能的​​磁有序性

无限层类型的新型镍酸盐超导体在具有掺杂的常态相图中具有极具挑战性的电子特性。纠缠的独特的多体行为和不同的分散方式$\{你\text{-}{d}_{{ž}^{\mathrm{2个}}}$， 你-$d_{X^{\mathrm{2个}}-{ÿ}^{\mathrm{2个}}}\}$ 轨道部门产生了高度丰富的物理学，在这里我们针对这种情况进行了研究。 $钕你{\mathrm{Ø}}_{\mathrm{2个}}$系统。基于先进的现实动力学平均场理论的分析表明，超导电空穴掺杂区是掺杂不足的一侧（自掺杂）Mott绝缘子和掺杂过量的有害Hund金属的交汇点。镍的费米平交道口$d_{{ž}^{\mathrm{2个}}}$扁平带将这两种制度结合在一起，形成了非常规超导的奇异舞台。我们进一步阐明了无限层镍酸盐中难以捉摸的磁性问题。Ni力矩小的反铁磁（AFM）订单在低温下是至关重要的竞争者。在化学计量比下，C-AFM沿铁磁自旋对准$C$轴可得益于可以想象的与Kondo（-lattice）筛选共存。